Edge binding machine



OCL Z, 1951 w ADAMS 2,570,086

EDGE BINDING MACHINE Filed Sept. 19, 1946 6 ShetsSheet 1 FIG 1 WALTER ADAMS hv-ew Zor- ATTORNEYS Oct. 2, 1951 w. ADAMS EDGE BINDING MACHINE 6 Sheets-Sheet 2 Filed Sept. 19, 1946 g in E WALTER ADAMS 152F671???" E A TTORNEYS Oct. 2,- 1951 w. ADAMS EDGE BINDING MACHINE 6 Sheets-Sheet 3 Filed Sept. 19, 1946 FIG?) Liif WALTER ADA M5 hare-n20? E ATTORNEYS Oct. 2, 1951 w ADAMS 2,570,086

EDGE BINDING MACHINE Filed Sept. 19, 1946 6 Sheets-Sheet 4 FIG 8 I '5 47:: 460. 47 57 1 37c 37C WALTER ADAMS fivnZa? i E Azfiim Oct. 2, 1951 w. ADAMS EDGE BINDING MACHINE 6 SheetsSheet 5 Filed Sept. 19, 1946 FIGS 35 55 as 27 29b 40 W ALTER ADAMS Even Z07 ATTORNEYS Oct. 2, 1951 Filed Sept. 19, 1946 W. ADAMS EDGE BINDING MACHINE 6 Sheets-Sheet 6 BY QWMM hYQ M A TTORNEYS Patented OctQ Z 19 5 EDGE BINDING MACHINE Walter ,AdamsQStafford, England, assignor to Lotus Limited, Stafford, England, a company of Great Britain Application September 19, 1946, Serial No. 698,004

In Great Britain March 4, 1946 7 Claims.

This invention consists in a new or improved edge binding machine and has for its especial object to provide a new or improved machine for applying a binding tape to such articles as the edges of insoles in the manufacture of shoes.

The machine of my invention is characterized by the employment of a pair of superposed rotary pressure rollers which are located above and below the marginal portions of the article being bound and which rotate in the direction of the feed.

The new or improved edge binding machine of my invention is further characterized by means for feeding the work to be bound through the machine in combination with a pair of superposed pressure exerting rotary members which are located above and. below the marginal portions of the work being bound and which present downwardly and upwardly directed faces in facial contact with the opposite sides of the work and which rotary members during the progress of the work through the machine rotate in the direction of feed with their contacting faces sweeping across the top side and the underside portions of the binding as it is being applied so that the rotary members simultaneously subject the binding to an inwardly directed swaging action as well as to pressure.

Themachineof my invention is still further characterized by positively driven means for feeding the work to be bound through the machine in combination with a pair of superposed pressure exerting rotary members which are located above and below the marginal portions of the work being bound and which present downwardly and upwardly directed facesin facial contact with the opposite sides of thework, together with means for positively driving the rotary memhas so that they rotate in the direction of feed with their contacting faces aforesaid sweeping across the top side and underside portions of the binding as it is being applied, and means for guiding the binding onto the edge of the article to be bound and between the contacting faces of the said rotary members so that the rotary members in the progress of binding simultaneously subject the portions of the binding which are folded over the edge to be bound to an inwardly directed swaging action as well as to pressure.

Further according to the invention a rotary member is carried by a means which is adjustably mounted in an arcuate slideway so as to permit of a variation in the relative angular setting of the superposed rotary members. y

The invention still further resides in an edge binding machine constructed, arranged and adapted for use substantially as will be described hereinafter.

An embodiment of the invention will now be described with particular reference to the accompanying drawings which illustrate the invention in its application to a machine specifically intended for binding with adhesive tape the edges of insoles in the manufacture of ladies dress shoes.

In the drawings:

Figure l is a part sectional side elevation of the improved edge bindingmachine.

Figure 2 is a plan of the machine illustrated in Figure 1.

Figure 3 is an end view of Figure 1 looking in the direction of the arrow in the said Figure 1.

Figure 4 is a fragmentary plan view of the lowermost of the superposed rotary members and adjacent parts.

Figure 5 is a diagrammatic representation showing the machine in readiness for the insertion of the insole to be bound.

Figure 6 is a diagrammatic view showing the method of adjusting the upper rotary member to compensate for parts of the insole of varying thickness.

Figure 7 is a diagrammatic representation showing the manner of applying the binding to the edge of the insole.

Figure 8 is a fragmentary view mainly in section showing the method of positively driving the uppermost of the superposed rotary members and Figure 9 is a fragmentary view on an enlarged scale illustrating the manner in which the binding is fed to the nip of the superposed rotary I members.

In the drawings, like numerals of reference indicate similar parts in the several views, and, where desirable, parts have been omitted for the sake of clearness.

According to the said embodiment of the invention the improved machine comprises a housing I0 provided with feet Ilia which may be screwed to a bench or other base. This housing In is furnished with bearings Iilb for a longitudinally arranged driving shaft II hereinafter termed the primary driving shaft I I. Mounted on an externally projecting portion of the primary driving shaft I I is a pulley I2 adapted to be driven by a belt from an electric motor (not shown). On its internally disposed end portion the primary driving shaft II carries a bevel pinion I3 which meshes with a bevel pinion I4 mounted on a vertically disposed spindle I5, ro-

tatably mounted in a bearing lllc, said spindle l5 carrying a worm 16 which meshes with a worm wheel ll mounted on an internally disposed portion of a second longitudinally arranged shaft |8 which hereinafter is termed the transmission shaft [8.

One end of the transmission shaft 18 projects from the front wall of the housing. H! and has fixed thereon a gear wheel l9 which meshes with an intermediate gear wheel 28 idly mounted in a bearing provided in a plate 2| screwed to an end of the housing l8, said intermediate gear wheel 28 in turn meshing with a gear wheel 22 which is rotatably mounted relatively" to a shaft 23 which is supported in bearings in the said mounting plate 2| and an arcuate complementary plate 2|a secured to the end of the housing ID. This last mentioned gear wheel 22 is fixed on the boss of a disc 24 having a milled periphery, said disc 24 being called henceforth the lower feed roller 24. Freely mounted on the boss of the lower feed roller 24 is an auxiliary feed roller 24a. The lower feed roller 24 co-operates with a superposed bevel edged disc 25 which will be termed the upper feed roller 25. The upper feed A roller 25 is rotatably mounted on a stub shaft the axis of which is inclined upwardly and inwardly relatively to the shaft 23 carrying the lower feed roller 24, The stub shaft for the upper feed roller 25 is carried at the lower end of a depending arm 29a which co-operates with the upstanding arm 36a of a bell crank lever 38 which is fulcrumecl within the housing H] and the other arm 36b of which is connected by means of a chain 3| to the rear end of the treadle 32 of a treadle control of known kind. The depending arm 29a abuts one end of a coiled spring 33 the other end whereof abuts an adjustable screw stop 34 secured within the housing Ill.

The inner sides of the free end portions of the cranked side levers 21 have bolted thereto the vertical ribs 35a of plates 35 of arcuate formation and bolted to the marginal portions of the sides on the underside of the plates 35 are arcuate plates 36 having upwardly and outwardly inclined edges 36a. These inclined edges 36a constitute arcuate slideways for the correspondingly undercut arcuate side flanges 31a formed at the upper end of a complementary block 3'! which will be termed hereinafter the adjustable mounting block 31. The center of curvature of the arcuate slideways is located substantially at the nip of the feed rollers 24 and 25.

Projecting upwardly from the centre of the upper end of the adjustable mounting block 31 is a spigot 31b to which is pivotally connected the adjacent ends of a pair of interconnected longitudinally arranged links 38 the other ends of which carry a roller 39 adapted to engage withina cam track 29b formed in the upstanding arm 290 of the lever 29 hereinbefore referred to. An adjustable stop pin 48 is provided for limiting the travel of the roller 39 in the cam track 291).

Intermediate their ends the links 38 have a pivotal connection to a tappet rod 4| the lower to maintain the tappet rod in the position shown in Figure 1.

Rotatably mounted in a bushing 310 which is contained within the adjustable mounting block 3! and which is integral with the spigot 37b aforesaid is a stub axle 46a which carries at its lower end an integrally formed roller 46 having a serrated under surface 461), said roller 46 being called henceforth the upper pressure roller 46. The stub axle 46a is recessed for the accommodation of a sleeve 460 which is non-rotatable relatively to the stub axle 46a and which itself is slotted for the reception of the ends of the projecting arms 4111 provided at the upper end of an articulated driving pin 41. The lower end of this articulated driving pin 41 is provided with projecting arms 41b which are arranged at right angles to the arms 41a said arms 411) being adapted to engage within slots formed in a sleeve 4811 which is secured to an upwardly projecting sleeve or collar 48b located at the centre of a roller 48 which is complementary to but which i disposed below the upper pressure roller 46, said complementary roller 48 being called henceforth the lower pressure roller 48. Th upper surface 480 of the lower pressure roller also is serrated. V

V The central portion of the upper pressureroller 46 is provided with an inverted frusto-conical recess 46d for the reception of the upwardly projecting sleeve portion 48b of the lower pressure roller 48 (see Figure 8) V Integral with the lower pressure roller 48 is a hollow stub shaft 4801 which projects downwardly and is rotatably mounted in a vertical bushing 58 mounted within the housing 18. The stub shaft 48d is bored so as to fit around the upwardly projecting end of a spindle 5| which is rotatably mounted within the bushing 50. Disposed within the bore of the stub shaft 48d is a diametrically arranged bar 48c adapted to engage within the slotted upper end of the spindle 5| so as to constitute a dog clutch driving con-i nection between the spindle 5| and the stub shaft 4802. The spindle 5| is itself adapted to be driven from the transmission shaft 3 through bevel gears 52, 53. A spring 54 is interposed between the end of stub shaft 48d and the flanged bottom of the bush 50 so that the spring 54 tends to urge the lower pressure roller 48 into abutment with the upper pressure roller 46 which in turn is pressed downwardly by a spring 55 interposed between a flange on the bush 31c and the head of the stub shaft 46a. From the foregoing description it will be apparent that the upper pressure roller 46 is driven through its connection with the lower pressure roller.

Mounted on the upper end of the housing l8 7 ance of a coiled spring 59, disposed within the casing 51. A screw pin 66 working within a slot 6| is provided for limiting the degree of outward and inward movement permitted to the guide head 58a.

The axis of the upper feed roller 25 is inclined normally relatively to the axis of the lower feed roller 24 so that the rollers 24 and 25 tend to touch at a point adjacent to and in front of the nip of the pressure rollers 46, 48 said point also being the centre from which the radius of the arcuate guideways 36a is struck.

. The operation of the invention is as follows: Assuming the waist 62a and seat 62b of an insole 62 are to be bound the shorter arm of the treadle 32 is depressed thereby through the chain 3| and associated bell crank lever 30 depending crank arm 29a and spindle 28 tilting the free ends of the cranked side levers 21 upwardly and so separating the feed rollers 24, 25 and the pressure rollers 46, 48.

The insole 62 is then passed between the feed rollers 24, 25 with the marginal portion of the insole 62 located between the pressure rollers 46 and 48 whereupon the leading end of the adhesive coated binding 63 is threaded between the guide plates 5% and folded over the part of the waist 62a where binding is to commence and whereupon the treadle 32 is released to lower the upper feed roller 25 and the upper pressure roller 46 into contact with the work. The motor is then started by operating the treadle 32 and with the operator guiding the insole 62 against the pressure exercised by the guide head 58a the binding tape 63 is folded over the edge of the insole 62 by the rotating pressure rollers 46 and 48 which simultaneously swage the binding tape 63 away from the edge and apply pressure to the folded portions. The folding of the binding tape 63 is assisted by the upper and lower guide plates 58b.

The pressure rollers 46 and 48 both turn in a direction away from the operator, that is in the direction of feed, the lower pressure roller 48 being driven positively from the spindle 5| while the upper pressure roller is driven from the lower pressure roller 46 by way of the articulated pin 41.

When dealing with the binding of the seat 62b the operator is able to apply tension to the binding tape 63 and so avoid puckering and the auxiliary feed roller 24a enables the work to be turned easily around arcuate corners or bends.

In order to compensate for differences in thickness of an insole due to the skiving of parts of the edge of the insole 62 or the building up of the heel seat section 62b thereof the operator manipulates the knee controlled arm 44 which through the tappet rod 4| lifts the links 38 and through the roller 39 and cam slot 29b effects a movement of the guide block 31 in its arcuate slideways 36a and so varies the angle of the upper pressure roller 46 relatively to the work. It will be appreciated that the inverted frusto-conical shaping of the recess 46d permits of the variation of the angle of the upper pressure roller 46 as aforesaid since the upwardly projecting portion 48?) of the lower pressure roller 48 can accommodate itself within the said recess 46d during displacement of the upper pressure roller 46.

It will be appreciated that the springs 54 and 55 operating on the lower and upper pressure rollers 48 and 46 respectively tend to keep the marginal sections of the Work gripped firmly between the pressure rollers 46, 48.

The pressure of the feed rollers 24, 25 is ef- 6. fected through the reaction of the coiled spring 33 in the housing I ll on the crank arm 29 fast to and projecting downwardly from the spindle 28 carrying the cranked side levers 21.

It is found that the serration of the adjacent faces of the pressure rollers 46, 48 permits of a slight gathering of the binding tape 63 to take place within the serration concerned prior to passage into the nip of the pressure rollers 46, 48 so that an even feed without puckering takes place (see Figure 9).

It should be pointed out that an edge binding machine as hereinbefore described may within limits be utilised for binding insoles 62 of widely varying thicknesses and with different ranges of skiving and that it permits of the use of relatively short strips of binding material.

Although the invention is particularly intended for edge binding in the manufacture of shoes it will be understood that it may be applied for edge binding for other purposes, say for example, in the manufacture of articles from cardboard or similar material.

Having thus disclosed my invention and described in detail illustrative embodiments thereof, I claim as new and desire to secure by Letters Patent:

1. An edge binding machine incorporating a positively driven means for feeding the work to be bound through the machine, a pair of superposed pressure exerting rotary members which are arranged so as to be located above and below the marginal portions of the edge to be bound and which present downwardly and upwardly directed faces in facial contactwith the opposite sides of the work being bound, means for positively driving the rotary members so that they rotate in the direction of feed with the contacting faces sweeping across the top side and underside portions of the binding as it is being applied, means for varying the relative setting of the axes of the superposed rotary members and means for guiding the binding on to the edge to be bound and between the said rotary members so that the said rotary members in the progress of binding simultaneously subject the portions of the binding which are folded over the said edge to an inwardly directed swaging action as well as to pressure.

2. An edge binding machine comprising a housing, a lower feed roller rotatably supported by said housing, gearing for transmitting a positive drive to said lower feed roller, a supporting means pivotally mounted relatively to the housing, a complementary upper feed roller carried by said supporting means, a lower pressure roller rotatably mounted in said housing on a vertical axis with an upwardly directed face presented to the underside of the work, means for positively driving said lower pressure roller in the direction of feed, a complementary upper pressure roller rotatably mounted above said lower pressure roller with a downwardly directed face presented toward the upper side of the work, means for positively drivin the upper pressure roller in the direction of feed, means for tilting the pivotal supporting means aforesaid when required, means for varying the angular setting of the axis of the upper pressure roller relatively to the axis of the lower pressure roller and means for guiding the work between the feed rollers and into the nip of the pressure rollers so that the said pressure rollers in the progress of binding sweep across the top side and underside portions of the binding as it is being applied and '7 simultaneously subject the portions of the binding which are folded over the edge to be bound to an inwardly directed swaging action as well as to pressure.

3. An edge bindin machine including in its organization positively driven means for feedin the work to be bound through the machine, a pair of superposed pressure rollers located above and below the marginal portions of the edge to be bound and presenting downwardly and upwardly directed faces in contact with the opposite sides of the work, means for positively driving the pressure rollers in the direction of feed with their contacting faces sweeping across the top side and underside portions of the binding as it is being applied, a carrier block for the upper pressure roller slidably mounted in arcuate guideways, a linkage pivotally connected at one end to said carrier block, a cam and a follower connected to the other end of the linkage whereby the angle of the axis of the upper pressure roller may be adjusted to effect a variation in its setting relatively to the axis of the lower roller.

4. An edge binding machine according to claim 2 in which the axis of the upper feed roller is inclined relatively to the axis of rotation of the lower feed roller.

5. An edge binding machine according to claim 2 in which the guiding means is in the form of a channel section guide head carried by a block which is slidably mounted in a longitudinal guideway and in which spring means is provided for tending to maintain the said guide head in contact with the work.

6. An edge binding machine comprising a housing, a lower feed roller and a lower pressure roller mounted therein for rotation about fixed axes at substantially right angles to each other, an upper feed roller cooperating withthe lower feed roller, a support movable in a curved path having its center of curvature substantially at the nip of the feed rollers, and an upper pressure roller mounted in the said support for rotation about an axis substantially at right angles to the upper feed roller.

7. An edge binding machine of the character described in claim 6 further characterized by additional manually operated mechanism for bodily moving the upper feed and pressure rollers away from the lower feed and pressure rollers to permit the insertion of the work, and a connection between the'upper and lower pressure rollers whereby one is driven directlyrfrom the other.

WALTER ADAMS.

REFERENCES CITED The following references are of record in the 

